/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:44:41,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:44:41,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:44:41,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:44:41,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:44:41,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:44:41,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:44:41,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:44:41,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:44:41,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:44:41,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:44:41,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:44:41,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:44:41,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:44:41,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:44:41,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:44:41,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:44:41,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:44:41,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:44:41,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:44:41,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:44:41,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:44:41,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:44:41,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:44:41,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:44:41,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:44:41,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:44:41,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:44:41,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:44:41,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:44:41,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:44:41,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:44:41,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:44:41,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:44:41,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:44:41,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:44:41,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:44:41,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:44:41,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:44:41,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:44:41,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:44:41,401 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 06:44:41,423 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:44:41,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:44:41,424 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:44:41,424 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:44:41,425 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:44:41,425 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:44:41,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:44:41,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:44:41,425 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:44:41,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:44:41,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:44:41,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:44:41,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:44:41,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:44:41,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:44:41,427 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:44:41,427 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:44:41,427 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:44:41,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:44:41,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:44:41,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:44:41,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:44:41,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:44:41,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:44:41,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:44:41,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:44:41,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:44:41,428 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:44:41,428 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:44:41,428 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:44:41,428 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:44:41,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:44:41,428 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:44:41,428 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:44:41,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:44:41,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:44:41,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:44:41,609 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:44:41,610 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:44:41,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.11.cil.c [2022-01-10 06:44:41,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13bcbb009/523c7b81b90145d682a1ec53011346f7/FLAG3e2526052 [2022-01-10 06:44:42,047 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:44:42,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.11.cil.c [2022-01-10 06:44:42,054 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13bcbb009/523c7b81b90145d682a1ec53011346f7/FLAG3e2526052 [2022-01-10 06:44:42,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13bcbb009/523c7b81b90145d682a1ec53011346f7 [2022-01-10 06:44:42,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:44:42,065 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:44:42,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:44:42,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:44:42,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:44:42,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:44:42" (1/1) ... [2022-01-10 06:44:42,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b1acd22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:42, skipping insertion in model container [2022-01-10 06:44:42,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:44:42" (1/1) ... [2022-01-10 06:44:42,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:44:42,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:44:42,225 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.11.cil.c[706,719] [2022-01-10 06:44:42,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:44:42,343 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:44:42,350 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.11.cil.c[706,719] [2022-01-10 06:44:42,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:44:42,395 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:44:42,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:42 WrapperNode [2022-01-10 06:44:42,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:44:42,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:44:42,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:44:42,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:44:42,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:42" (1/1) ... [2022-01-10 06:44:42,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:42" (1/1) ... [2022-01-10 06:44:42,441 INFO L137 Inliner]: procedures = 50, calls = 63, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 749 [2022-01-10 06:44:42,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:44:42,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:44:42,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:44:42,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:44:42,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:42" (1/1) ... [2022-01-10 06:44:42,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:42" (1/1) ... [2022-01-10 06:44:42,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:42" (1/1) ... [2022-01-10 06:44:42,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:42" (1/1) ... [2022-01-10 06:44:42,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:42" (1/1) ... [2022-01-10 06:44:42,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:42" (1/1) ... [2022-01-10 06:44:42,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:42" (1/1) ... [2022-01-10 06:44:42,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:44:42,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:44:42,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:44:42,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:44:42,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:42" (1/1) ... [2022-01-10 06:44:42,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:44:42,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:44:42,494 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 06:44:42,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 06:44:42,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:44:42,532 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 06:44:42,532 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 06:44:42,532 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 06:44:42,532 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 06:44:42,532 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 06:44:42,532 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 06:44:42,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:44:42,532 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 06:44:42,532 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 06:44:42,532 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 06:44:42,532 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 06:44:42,532 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 06:44:42,533 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 06:44:42,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:44:42,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:44:42,641 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:44:42,642 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:44:43,185 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:44:43,199 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:44:43,199 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-01-10 06:44:43,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:44:43 BoogieIcfgContainer [2022-01-10 06:44:43,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:44:43,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:44:43,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:44:43,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:44:43,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:44:42" (1/3) ... [2022-01-10 06:44:43,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31024dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:44:43, skipping insertion in model container [2022-01-10 06:44:43,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:42" (2/3) ... [2022-01-10 06:44:43,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31024dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:44:43, skipping insertion in model container [2022-01-10 06:44:43,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:44:43" (3/3) ... [2022-01-10 06:44:43,208 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.11.cil.c [2022-01-10 06:44:43,212 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:44:43,213 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:44:43,249 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:44:43,254 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 06:44:43,254 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:44:43,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 353 states, 321 states have (on average 1.6604361370716512) internal successors, (533), 323 states have internal predecessors, (533), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 06:44:43,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:44:43,294 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:43,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:44:43,295 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:43,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:43,300 INFO L85 PathProgramCache]: Analyzing trace with hash 809837522, now seen corresponding path program 1 times [2022-01-10 06:44:43,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:43,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679530397] [2022-01-10 06:44:43,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:43,310 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:43,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:43,313 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:43,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 06:44:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:43,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:44:43,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:43,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:44:43,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:43,801 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:43,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679530397] [2022-01-10 06:44:43,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679530397] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:43,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:43,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:44:43,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322912832] [2022-01-10 06:44:43,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:43,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:44:43,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:43,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:44:43,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:44:43,835 INFO L87 Difference]: Start difference. First operand has 353 states, 321 states have (on average 1.6604361370716512) internal successors, (533), 323 states have internal predecessors, (533), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:43,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:43,935 INFO L93 Difference]: Finished difference Result 695 states and 1145 transitions. [2022-01-10 06:44:43,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:44:43,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:44:43,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:43,951 INFO L225 Difference]: With dead ends: 695 [2022-01-10 06:44:43,951 INFO L226 Difference]: Without dead ends: 348 [2022-01-10 06:44:43,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:44:43,960 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 537 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:43,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 547 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:44:43,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-01-10 06:44:44,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2022-01-10 06:44:44,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 317 states have (on average 1.5646687697160884) internal successors, (496), 318 states have internal predecessors, (496), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 06:44:44,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 544 transitions. [2022-01-10 06:44:44,047 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 544 transitions. Word has length 175 [2022-01-10 06:44:44,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:44,049 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 544 transitions. [2022-01-10 06:44:44,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:44,050 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 544 transitions. [2022-01-10 06:44:44,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:44:44,060 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:44,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:44:44,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:44,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:44,268 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:44,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:44,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1760521452, now seen corresponding path program 1 times [2022-01-10 06:44:44,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:44,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780659285] [2022-01-10 06:44:44,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:44,270 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:44,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:44,271 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:44,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 06:44:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:44,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:44,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:44,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:44:44,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:44,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:44,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780659285] [2022-01-10 06:44:44,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780659285] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:44,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:44,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:44,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805462617] [2022-01-10 06:44:44,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:44,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:44,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:44,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:44,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:44,678 INFO L87 Difference]: Start difference. First operand 348 states and 544 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:45,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:45,243 INFO L93 Difference]: Finished difference Result 1048 states and 1668 transitions. [2022-01-10 06:44:45,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:44:45,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:44:45,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:45,248 INFO L225 Difference]: With dead ends: 1048 [2022-01-10 06:44:45,248 INFO L226 Difference]: Without dead ends: 719 [2022-01-10 06:44:45,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:44:45,250 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 1042 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:45,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1060 Valid, 1659 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 06:44:45,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-01-10 06:44:45,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 692. [2022-01-10 06:44:45,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 635 states have (on average 1.5748031496062993) internal successors, (1000), 637 states have internal predecessors, (1000), 43 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 06:44:45,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1087 transitions. [2022-01-10 06:44:45,287 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1087 transitions. Word has length 175 [2022-01-10 06:44:45,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:45,287 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 1087 transitions. [2022-01-10 06:44:45,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:45,288 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1087 transitions. [2022-01-10 06:44:45,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:44:45,289 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:45,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:44:45,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:45,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:45,504 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:45,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:45,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1704816597, now seen corresponding path program 1 times [2022-01-10 06:44:45,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:45,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478937308] [2022-01-10 06:44:45,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:45,505 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:45,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:45,506 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:45,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 06:44:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:45,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:45,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:45,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:44:45,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:45,863 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:45,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478937308] [2022-01-10 06:44:45,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478937308] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:45,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:45,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:45,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898686097] [2022-01-10 06:44:45,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:45,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:45,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:45,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:45,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:45,865 INFO L87 Difference]: Start difference. First operand 692 states and 1087 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:46,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:46,158 INFO L93 Difference]: Finished difference Result 1365 states and 2149 transitions. [2022-01-10 06:44:46,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:44:46,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:44:46,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:46,163 INFO L225 Difference]: With dead ends: 1365 [2022-01-10 06:44:46,163 INFO L226 Difference]: Without dead ends: 692 [2022-01-10 06:44:46,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:44:46,167 INFO L933 BasicCegarLoop]: 514 mSDtfsCounter, 738 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:46,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 1103 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:44:46,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-01-10 06:44:46,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2022-01-10 06:44:46,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 635 states have (on average 1.5637795275590551) internal successors, (993), 637 states have internal predecessors, (993), 43 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 06:44:46,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1080 transitions. [2022-01-10 06:44:46,218 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1080 transitions. Word has length 175 [2022-01-10 06:44:46,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:46,219 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 1080 transitions. [2022-01-10 06:44:46,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:46,219 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1080 transitions. [2022-01-10 06:44:46,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:44:46,220 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:46,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:44:46,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:46,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:46,431 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:46,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:46,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1837964949, now seen corresponding path program 1 times [2022-01-10 06:44:46,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:46,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106723889] [2022-01-10 06:44:46,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:46,432 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:46,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:46,433 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:46,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 06:44:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:46,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:46,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:46,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:44:46,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:46,752 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:46,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106723889] [2022-01-10 06:44:46,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106723889] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:46,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:46,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:46,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032071073] [2022-01-10 06:44:46,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:46,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:46,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:46,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:46,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:46,756 INFO L87 Difference]: Start difference. First operand 692 states and 1080 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:47,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:47,078 INFO L93 Difference]: Finished difference Result 1365 states and 2135 transitions. [2022-01-10 06:44:47,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:44:47,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:44:47,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:47,082 INFO L225 Difference]: With dead ends: 1365 [2022-01-10 06:44:47,082 INFO L226 Difference]: Without dead ends: 692 [2022-01-10 06:44:47,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:44:47,088 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 732 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:47,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 1096 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:44:47,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-01-10 06:44:47,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2022-01-10 06:44:47,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 635 states have (on average 1.552755905511811) internal successors, (986), 637 states have internal predecessors, (986), 43 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 06:44:47,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1073 transitions. [2022-01-10 06:44:47,113 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1073 transitions. Word has length 175 [2022-01-10 06:44:47,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:47,113 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 1073 transitions. [2022-01-10 06:44:47,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:47,114 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1073 transitions. [2022-01-10 06:44:47,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:44:47,115 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:47,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:44:47,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:47,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:47,324 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:47,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:47,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1703712725, now seen corresponding path program 1 times [2022-01-10 06:44:47,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:47,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967685960] [2022-01-10 06:44:47,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:47,325 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:47,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:47,326 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:47,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 06:44:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:47,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:47,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:47,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:44:47,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:47,665 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:47,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967685960] [2022-01-10 06:44:47,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967685960] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:47,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:47,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:47,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564543624] [2022-01-10 06:44:47,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:47,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:47,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:47,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:47,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:47,666 INFO L87 Difference]: Start difference. First operand 692 states and 1073 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:47,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:47,923 INFO L93 Difference]: Finished difference Result 1365 states and 2121 transitions. [2022-01-10 06:44:47,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:44:47,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:44:47,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:47,926 INFO L225 Difference]: With dead ends: 1365 [2022-01-10 06:44:47,926 INFO L226 Difference]: Without dead ends: 692 [2022-01-10 06:44:47,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:44:47,928 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 726 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:47,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 1089 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:44:47,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-01-10 06:44:47,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2022-01-10 06:44:47,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 635 states have (on average 1.541732283464567) internal successors, (979), 637 states have internal predecessors, (979), 43 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 06:44:47,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1066 transitions. [2022-01-10 06:44:47,946 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1066 transitions. Word has length 175 [2022-01-10 06:44:47,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:47,946 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 1066 transitions. [2022-01-10 06:44:47,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:47,946 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1066 transitions. [2022-01-10 06:44:47,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:44:47,969 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:47,970 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:44:47,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:48,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:48,179 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:48,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:48,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1625753963, now seen corresponding path program 1 times [2022-01-10 06:44:48,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:48,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775423328] [2022-01-10 06:44:48,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:48,180 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:48,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:48,181 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:48,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 06:44:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:48,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:48,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:44:48,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:48,529 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:48,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775423328] [2022-01-10 06:44:48,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [775423328] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:48,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:48,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:48,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346511248] [2022-01-10 06:44:48,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:48,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:48,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:48,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:48,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:48,531 INFO L87 Difference]: Start difference. First operand 692 states and 1066 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:48,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:48,807 INFO L93 Difference]: Finished difference Result 1365 states and 2107 transitions. [2022-01-10 06:44:48,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:44:48,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:44:48,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:48,810 INFO L225 Difference]: With dead ends: 1365 [2022-01-10 06:44:48,811 INFO L226 Difference]: Without dead ends: 692 [2022-01-10 06:44:48,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:44:48,815 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 720 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:48,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 1082 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:44:48,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-01-10 06:44:48,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2022-01-10 06:44:48,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 635 states have (on average 1.5307086614173229) internal successors, (972), 637 states have internal predecessors, (972), 43 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 06:44:48,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1059 transitions. [2022-01-10 06:44:48,835 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1059 transitions. Word has length 175 [2022-01-10 06:44:48,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:48,836 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 1059 transitions. [2022-01-10 06:44:48,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:48,836 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1059 transitions. [2022-01-10 06:44:48,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:44:48,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:48,837 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:44:48,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:49,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:49,046 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:49,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:49,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1730527189, now seen corresponding path program 1 times [2022-01-10 06:44:49,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:49,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917303130] [2022-01-10 06:44:49,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:49,047 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:49,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:49,048 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:49,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 06:44:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:49,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:49,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:44:49,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:49,362 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:49,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917303130] [2022-01-10 06:44:49,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917303130] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:49,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:49,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:49,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267858260] [2022-01-10 06:44:49,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:49,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:49,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:49,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:49,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:49,363 INFO L87 Difference]: Start difference. First operand 692 states and 1059 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:49,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:49,645 INFO L93 Difference]: Finished difference Result 1365 states and 2093 transitions. [2022-01-10 06:44:49,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:44:49,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:44:49,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:49,657 INFO L225 Difference]: With dead ends: 1365 [2022-01-10 06:44:49,657 INFO L226 Difference]: Without dead ends: 692 [2022-01-10 06:44:49,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:44:49,659 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 714 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:49,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 1075 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:44:49,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-01-10 06:44:49,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2022-01-10 06:44:49,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 635 states have (on average 1.5196850393700787) internal successors, (965), 637 states have internal predecessors, (965), 43 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 06:44:49,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1052 transitions. [2022-01-10 06:44:49,684 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1052 transitions. Word has length 175 [2022-01-10 06:44:49,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:49,684 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 1052 transitions. [2022-01-10 06:44:49,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:49,684 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1052 transitions. [2022-01-10 06:44:49,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:44:49,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:49,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:44:49,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:49,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:49,897 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:49,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:49,897 INFO L85 PathProgramCache]: Analyzing trace with hash -239415659, now seen corresponding path program 1 times [2022-01-10 06:44:49,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:49,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220174585] [2022-01-10 06:44:49,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:49,898 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:49,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:49,899 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:49,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 06:44:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:50,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:50,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:50,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:44:50,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:50,226 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:50,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [220174585] [2022-01-10 06:44:50,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [220174585] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:50,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:50,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:50,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834289120] [2022-01-10 06:44:50,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:50,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:50,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:50,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:50,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:50,227 INFO L87 Difference]: Start difference. First operand 692 states and 1052 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:50,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:50,509 INFO L93 Difference]: Finished difference Result 1365 states and 2079 transitions. [2022-01-10 06:44:50,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:44:50,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:44:50,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:50,513 INFO L225 Difference]: With dead ends: 1365 [2022-01-10 06:44:50,513 INFO L226 Difference]: Without dead ends: 692 [2022-01-10 06:44:50,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:44:50,515 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 707 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:50,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [725 Valid, 1068 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:44:50,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-01-10 06:44:50,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2022-01-10 06:44:50,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 635 states have (on average 1.5086614173228345) internal successors, (958), 637 states have internal predecessors, (958), 43 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 06:44:50,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1045 transitions. [2022-01-10 06:44:50,536 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1045 transitions. Word has length 175 [2022-01-10 06:44:50,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:50,537 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 1045 transitions. [2022-01-10 06:44:50,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:50,537 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1045 transitions. [2022-01-10 06:44:50,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:44:50,539 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:50,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:44:50,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:50,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:50,749 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:50,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:50,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1691709975, now seen corresponding path program 1 times [2022-01-10 06:44:50,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:50,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687998817] [2022-01-10 06:44:50,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:50,750 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:50,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:50,751 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:50,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 06:44:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:50,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:50,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:51,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:44:51,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:51,076 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:51,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687998817] [2022-01-10 06:44:51,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687998817] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:51,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:51,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:51,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992014175] [2022-01-10 06:44:51,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:51,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:51,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:51,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:51,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:51,077 INFO L87 Difference]: Start difference. First operand 692 states and 1045 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:51,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:51,368 INFO L93 Difference]: Finished difference Result 1365 states and 2065 transitions. [2022-01-10 06:44:51,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:44:51,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:44:51,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:51,375 INFO L225 Difference]: With dead ends: 1365 [2022-01-10 06:44:51,375 INFO L226 Difference]: Without dead ends: 692 [2022-01-10 06:44:51,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:44:51,378 INFO L933 BasicCegarLoop]: 496 mSDtfsCounter, 701 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:51,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 1061 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:44:51,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-01-10 06:44:51,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2022-01-10 06:44:51,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 635 states have (on average 1.4976377952755906) internal successors, (951), 637 states have internal predecessors, (951), 43 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 06:44:51,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1038 transitions. [2022-01-10 06:44:51,410 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1038 transitions. Word has length 175 [2022-01-10 06:44:51,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:51,411 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 1038 transitions. [2022-01-10 06:44:51,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:51,411 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1038 transitions. [2022-01-10 06:44:51,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:44:51,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:51,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:44:51,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:51,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:51,621 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:51,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:51,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1262017367, now seen corresponding path program 1 times [2022-01-10 06:44:51,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:51,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183268827] [2022-01-10 06:44:51,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:51,622 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:51,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:51,623 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:51,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 06:44:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:51,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:51,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:51,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:44:51,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:51,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:51,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183268827] [2022-01-10 06:44:51,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183268827] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:51,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:51,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:51,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481869189] [2022-01-10 06:44:51,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:51,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:51,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:51,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:51,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:51,954 INFO L87 Difference]: Start difference. First operand 692 states and 1038 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:52,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:52,235 INFO L93 Difference]: Finished difference Result 1365 states and 2051 transitions. [2022-01-10 06:44:52,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:44:52,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:44:52,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:52,238 INFO L225 Difference]: With dead ends: 1365 [2022-01-10 06:44:52,238 INFO L226 Difference]: Without dead ends: 692 [2022-01-10 06:44:52,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:44:52,239 INFO L933 BasicCegarLoop]: 493 mSDtfsCounter, 695 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:52,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [713 Valid, 1054 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:44:52,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-01-10 06:44:52,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2022-01-10 06:44:52,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 635 states have (on average 1.4866141732283464) internal successors, (944), 637 states have internal predecessors, (944), 43 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 06:44:52,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1031 transitions. [2022-01-10 06:44:52,274 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1031 transitions. Word has length 175 [2022-01-10 06:44:52,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:52,274 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 1031 transitions. [2022-01-10 06:44:52,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:52,274 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1031 transitions. [2022-01-10 06:44:52,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:44:52,275 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:52,275 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:44:52,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:52,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:52,484 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:52,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:52,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1109608983, now seen corresponding path program 1 times [2022-01-10 06:44:52,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:52,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964976672] [2022-01-10 06:44:52,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:52,485 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:52,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:52,486 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:52,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 06:44:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:52,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:52,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:52,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:44:52,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:52,790 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:52,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964976672] [2022-01-10 06:44:52,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [964976672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:52,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:52,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:52,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463262535] [2022-01-10 06:44:52,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:52,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:52,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:52,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:52,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:52,792 INFO L87 Difference]: Start difference. First operand 692 states and 1031 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:53,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:53,083 INFO L93 Difference]: Finished difference Result 1365 states and 2037 transitions. [2022-01-10 06:44:53,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:44:53,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:44:53,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:53,087 INFO L225 Difference]: With dead ends: 1365 [2022-01-10 06:44:53,087 INFO L226 Difference]: Without dead ends: 692 [2022-01-10 06:44:53,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:44:53,089 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 689 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:53,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [707 Valid, 1047 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:44:53,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-01-10 06:44:53,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2022-01-10 06:44:53,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 635 states have (on average 1.4755905511811023) internal successors, (937), 637 states have internal predecessors, (937), 43 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 06:44:53,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1024 transitions. [2022-01-10 06:44:53,115 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1024 transitions. Word has length 175 [2022-01-10 06:44:53,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:53,115 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 1024 transitions. [2022-01-10 06:44:53,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:53,115 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1024 transitions. [2022-01-10 06:44:53,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:44:53,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:53,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:44:53,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:53,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:53,324 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:53,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:53,324 INFO L85 PathProgramCache]: Analyzing trace with hash 550503255, now seen corresponding path program 1 times [2022-01-10 06:44:53,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:53,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621436805] [2022-01-10 06:44:53,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:53,325 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:53,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:53,326 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:53,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 06:44:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:53,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:53,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:44:53,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:53,648 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:53,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621436805] [2022-01-10 06:44:53,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621436805] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:53,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:53,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:53,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654453698] [2022-01-10 06:44:53,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:53,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:53,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:53,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:53,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:53,649 INFO L87 Difference]: Start difference. First operand 692 states and 1024 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:53,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:53,940 INFO L93 Difference]: Finished difference Result 1365 states and 2023 transitions. [2022-01-10 06:44:53,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:44:53,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:44:53,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:53,943 INFO L225 Difference]: With dead ends: 1365 [2022-01-10 06:44:53,943 INFO L226 Difference]: Without dead ends: 692 [2022-01-10 06:44:53,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:44:53,944 INFO L933 BasicCegarLoop]: 487 mSDtfsCounter, 683 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:53,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [701 Valid, 1040 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:44:53,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-01-10 06:44:53,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2022-01-10 06:44:53,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 635 states have (on average 1.4645669291338583) internal successors, (930), 637 states have internal predecessors, (930), 43 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 06:44:53,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1017 transitions. [2022-01-10 06:44:53,963 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1017 transitions. Word has length 175 [2022-01-10 06:44:53,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:53,963 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 1017 transitions. [2022-01-10 06:44:53,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:53,963 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1017 transitions. [2022-01-10 06:44:53,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:44:53,964 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:53,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:44:53,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:54,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:54,174 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:54,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:54,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1225204247, now seen corresponding path program 1 times [2022-01-10 06:44:54,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:54,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342270162] [2022-01-10 06:44:54,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:54,176 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:54,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:54,177 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:54,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 06:44:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:54,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:54,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:54,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:44:54,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:54,488 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:54,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342270162] [2022-01-10 06:44:54,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342270162] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:54,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:54,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:54,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898485397] [2022-01-10 06:44:54,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:54,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:54,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:54,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:54,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:54,489 INFO L87 Difference]: Start difference. First operand 692 states and 1017 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:54,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:54,871 INFO L93 Difference]: Finished difference Result 1543 states and 2282 transitions. [2022-01-10 06:44:54,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:44:54,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:44:54,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:54,874 INFO L225 Difference]: With dead ends: 1543 [2022-01-10 06:44:54,875 INFO L226 Difference]: Without dead ends: 870 [2022-01-10 06:44:54,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:44:54,876 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 793 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:54,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [811 Valid, 1033 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:44:54,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2022-01-10 06:44:54,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 870. [2022-01-10 06:44:54,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 807 states have (on average 1.4423791821561338) internal successors, (1164), 809 states have internal predecessors, (1164), 45 states have call successors, (45), 16 states have call predecessors, (45), 17 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 06:44:54,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1255 transitions. [2022-01-10 06:44:54,912 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1255 transitions. Word has length 175 [2022-01-10 06:44:54,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:54,912 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 1255 transitions. [2022-01-10 06:44:54,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:54,912 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1255 transitions. [2022-01-10 06:44:54,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:44:54,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:54,913 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:44:54,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:55,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:55,121 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:55,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:55,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1108421463, now seen corresponding path program 1 times [2022-01-10 06:44:55,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:55,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259574355] [2022-01-10 06:44:55,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:55,122 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:55,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:55,123 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:55,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 06:44:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:55,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:55,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:55,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:44:55,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:55,434 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:55,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259574355] [2022-01-10 06:44:55,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259574355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:55,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:55,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:55,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142629535] [2022-01-10 06:44:55,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:55,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:55,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:55,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:55,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:55,435 INFO L87 Difference]: Start difference. First operand 870 states and 1255 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:55,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:55,810 INFO L93 Difference]: Finished difference Result 1899 states and 2758 transitions. [2022-01-10 06:44:55,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:44:55,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:44:55,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:55,814 INFO L225 Difference]: With dead ends: 1899 [2022-01-10 06:44:55,814 INFO L226 Difference]: Without dead ends: 1048 [2022-01-10 06:44:55,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:44:55,816 INFO L933 BasicCegarLoop]: 480 mSDtfsCounter, 787 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:55,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [805 Valid, 1024 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:44:55,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2022-01-10 06:44:55,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1048. [2022-01-10 06:44:55,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 979 states have (on average 1.4239019407558733) internal successors, (1394), 981 states have internal predecessors, (1394), 47 states have call successors, (47), 20 states have call predecessors, (47), 21 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 06:44:55,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1489 transitions. [2022-01-10 06:44:55,850 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1489 transitions. Word has length 175 [2022-01-10 06:44:55,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:55,851 INFO L470 AbstractCegarLoop]: Abstraction has 1048 states and 1489 transitions. [2022-01-10 06:44:55,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:55,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1489 transitions. [2022-01-10 06:44:55,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:44:55,852 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:55,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:44:55,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:56,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:56,060 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:56,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:56,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1600136984, now seen corresponding path program 1 times [2022-01-10 06:44:56,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:56,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214159390] [2022-01-10 06:44:56,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:56,061 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:56,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:56,062 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:56,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 06:44:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:56,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:56,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:56,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:44:56,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:56,363 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:56,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214159390] [2022-01-10 06:44:56,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214159390] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:56,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:56,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:56,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221460703] [2022-01-10 06:44:56,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:56,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:56,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:56,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:56,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:56,364 INFO L87 Difference]: Start difference. First operand 1048 states and 1489 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:56,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:56,762 INFO L93 Difference]: Finished difference Result 2255 states and 3226 transitions. [2022-01-10 06:44:56,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:44:56,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:44:56,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:56,767 INFO L225 Difference]: With dead ends: 2255 [2022-01-10 06:44:56,767 INFO L226 Difference]: Without dead ends: 1226 [2022-01-10 06:44:56,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:44:56,770 INFO L933 BasicCegarLoop]: 477 mSDtfsCounter, 779 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:56,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [797 Valid, 1017 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:44:56,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2022-01-10 06:44:56,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1226. [2022-01-10 06:44:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1151 states have (on average 1.4074717636837533) internal successors, (1620), 1153 states have internal predecessors, (1620), 49 states have call successors, (49), 24 states have call predecessors, (49), 25 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 06:44:56,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1719 transitions. [2022-01-10 06:44:56,807 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1719 transitions. Word has length 175 [2022-01-10 06:44:56,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:56,807 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 1719 transitions. [2022-01-10 06:44:56,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:56,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1719 transitions. [2022-01-10 06:44:56,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:44:56,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:56,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:44:56,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:57,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:57,016 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:57,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:57,017 INFO L85 PathProgramCache]: Analyzing trace with hash -187732838, now seen corresponding path program 1 times [2022-01-10 06:44:57,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:57,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362957507] [2022-01-10 06:44:57,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:57,017 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:57,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:57,018 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:57,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 06:44:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:57,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:57,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:57,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:44:57,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:57,335 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:57,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362957507] [2022-01-10 06:44:57,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362957507] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:57,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:57,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:57,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935359926] [2022-01-10 06:44:57,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:57,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:57,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:57,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:57,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:57,336 INFO L87 Difference]: Start difference. First operand 1226 states and 1719 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:57,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:57,720 INFO L93 Difference]: Finished difference Result 2611 states and 3686 transitions. [2022-01-10 06:44:57,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:44:57,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:44:57,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:57,732 INFO L225 Difference]: With dead ends: 2611 [2022-01-10 06:44:57,732 INFO L226 Difference]: Without dead ends: 1404 [2022-01-10 06:44:57,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:44:57,734 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 772 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:57,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [790 Valid, 1010 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:44:57,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2022-01-10 06:44:57,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1404. [2022-01-10 06:44:57,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1323 states have (on average 1.3922902494331066) internal successors, (1842), 1325 states have internal predecessors, (1842), 51 states have call successors, (51), 28 states have call predecessors, (51), 29 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 06:44:57,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 1945 transitions. [2022-01-10 06:44:57,781 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 1945 transitions. Word has length 175 [2022-01-10 06:44:57,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:57,781 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 1945 transitions. [2022-01-10 06:44:57,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:57,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 1945 transitions. [2022-01-10 06:44:57,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:44:57,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:57,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:44:57,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:57,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:57,990 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:57,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:57,991 INFO L85 PathProgramCache]: Analyzing trace with hash 769470747, now seen corresponding path program 1 times [2022-01-10 06:44:57,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:57,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811675646] [2022-01-10 06:44:57,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:57,991 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:57,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:57,992 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:57,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 06:44:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:58,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:58,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:58,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:44:58,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:58,298 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:58,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811675646] [2022-01-10 06:44:58,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811675646] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:58,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:58,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:58,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212903114] [2022-01-10 06:44:58,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:58,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:58,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:58,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:58,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:58,300 INFO L87 Difference]: Start difference. First operand 1404 states and 1945 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:58,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:58,698 INFO L93 Difference]: Finished difference Result 2967 states and 4138 transitions. [2022-01-10 06:44:58,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:44:58,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:44:58,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:58,704 INFO L225 Difference]: With dead ends: 2967 [2022-01-10 06:44:58,704 INFO L226 Difference]: Without dead ends: 1582 [2022-01-10 06:44:58,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:44:58,707 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 765 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:58,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [783 Valid, 1003 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:44:58,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2022-01-10 06:44:58,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1582. [2022-01-10 06:44:58,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1495 states have (on average 1.3779264214046822) internal successors, (2060), 1497 states have internal predecessors, (2060), 53 states have call successors, (53), 32 states have call predecessors, (53), 33 states have return successors, (54), 53 states have call predecessors, (54), 53 states have call successors, (54) [2022-01-10 06:44:58,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2167 transitions. [2022-01-10 06:44:58,791 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2167 transitions. Word has length 175 [2022-01-10 06:44:58,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:58,791 INFO L470 AbstractCegarLoop]: Abstraction has 1582 states and 2167 transitions. [2022-01-10 06:44:58,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:58,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2167 transitions. [2022-01-10 06:44:58,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:44:58,792 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:58,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:44:58,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:59,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:59,001 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:59,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:59,001 INFO L85 PathProgramCache]: Analyzing trace with hash 444751835, now seen corresponding path program 1 times [2022-01-10 06:44:59,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:59,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235736774] [2022-01-10 06:44:59,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:59,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:59,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:59,003 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:59,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 06:44:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:59,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:59,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:44:59,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:59,315 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:59,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235736774] [2022-01-10 06:44:59,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235736774] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:59,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:59,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:59,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51126297] [2022-01-10 06:44:59,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:59,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:59,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:59,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:59,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:59,316 INFO L87 Difference]: Start difference. First operand 1582 states and 2167 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:59,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:59,727 INFO L93 Difference]: Finished difference Result 3323 states and 4582 transitions. [2022-01-10 06:44:59,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:44:59,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:44:59,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:59,733 INFO L225 Difference]: With dead ends: 3323 [2022-01-10 06:44:59,733 INFO L226 Difference]: Without dead ends: 1760 [2022-01-10 06:44:59,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:44:59,737 INFO L933 BasicCegarLoop]: 468 mSDtfsCounter, 758 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:59,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [776 Valid, 996 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:44:59,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2022-01-10 06:44:59,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 1760. [2022-01-10 06:44:59,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1667 states have (on average 1.364127174565087) internal successors, (2274), 1669 states have internal predecessors, (2274), 55 states have call successors, (55), 36 states have call predecessors, (55), 37 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2022-01-10 06:44:59,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2385 transitions. [2022-01-10 06:44:59,815 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2385 transitions. Word has length 175 [2022-01-10 06:44:59,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:59,816 INFO L470 AbstractCegarLoop]: Abstraction has 1760 states and 2385 transitions. [2022-01-10 06:44:59,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:59,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2385 transitions. [2022-01-10 06:44:59,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:44:59,817 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:59,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:44:59,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 06:45:00,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:00,025 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:00,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:00,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1198551588, now seen corresponding path program 1 times [2022-01-10 06:45:00,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:00,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450585331] [2022-01-10 06:45:00,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:00,026 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:00,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:00,027 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:00,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 06:45:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:00,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:45:00,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:00,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:45:00,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:00,330 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:00,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450585331] [2022-01-10 06:45:00,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450585331] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:00,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:00,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:45:00,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768962052] [2022-01-10 06:45:00,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:00,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:45:00,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:00,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:45:00,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:00,331 INFO L87 Difference]: Start difference. First operand 1760 states and 2385 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:00,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:00,775 INFO L93 Difference]: Finished difference Result 3679 states and 5018 transitions. [2022-01-10 06:45:00,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:45:00,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:45:00,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:00,781 INFO L225 Difference]: With dead ends: 3679 [2022-01-10 06:45:00,781 INFO L226 Difference]: Without dead ends: 1938 [2022-01-10 06:45:00,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:45:00,784 INFO L933 BasicCegarLoop]: 465 mSDtfsCounter, 751 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:00,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [769 Valid, 989 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 06:45:00,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1938 states. [2022-01-10 06:45:00,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1938 to 1938. [2022-01-10 06:45:00,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1938 states, 1839 states have (on average 1.3507340946166395) internal successors, (2484), 1841 states have internal predecessors, (2484), 57 states have call successors, (57), 40 states have call predecessors, (57), 41 states have return successors, (58), 57 states have call predecessors, (58), 57 states have call successors, (58) [2022-01-10 06:45:00,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1938 states to 1938 states and 2599 transitions. [2022-01-10 06:45:00,873 INFO L78 Accepts]: Start accepts. Automaton has 1938 states and 2599 transitions. Word has length 175 [2022-01-10 06:45:00,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:00,873 INFO L470 AbstractCegarLoop]: Abstraction has 1938 states and 2599 transitions. [2022-01-10 06:45:00,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:00,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1938 states and 2599 transitions. [2022-01-10 06:45:00,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:45:00,874 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:00,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:45:00,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-01-10 06:45:01,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:01,083 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:01,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:01,083 INFO L85 PathProgramCache]: Analyzing trace with hash -2043581284, now seen corresponding path program 1 times [2022-01-10 06:45:01,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:01,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655571393] [2022-01-10 06:45:01,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:01,084 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:01,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:01,085 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:01,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 06:45:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:01,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:45:01,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:01,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:45:01,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:01,391 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:01,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655571393] [2022-01-10 06:45:01,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655571393] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:01,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:01,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:45:01,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729946957] [2022-01-10 06:45:01,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:01,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:45:01,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:01,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:45:01,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:01,392 INFO L87 Difference]: Start difference. First operand 1938 states and 2599 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:01,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:01,850 INFO L93 Difference]: Finished difference Result 4035 states and 5446 transitions. [2022-01-10 06:45:01,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:45:01,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:45:01,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:01,856 INFO L225 Difference]: With dead ends: 4035 [2022-01-10 06:45:01,856 INFO L226 Difference]: Without dead ends: 2116 [2022-01-10 06:45:01,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:45:01,860 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 744 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:01,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [762 Valid, 982 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 06:45:01,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2022-01-10 06:45:01,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 2116. [2022-01-10 06:45:01,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 2011 states have (on average 1.3376429636996519) internal successors, (2690), 2013 states have internal predecessors, (2690), 59 states have call successors, (59), 44 states have call predecessors, (59), 45 states have return successors, (60), 59 states have call predecessors, (60), 59 states have call successors, (60) [2022-01-10 06:45:01,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 2809 transitions. [2022-01-10 06:45:01,950 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 2809 transitions. Word has length 175 [2022-01-10 06:45:01,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:01,950 INFO L470 AbstractCegarLoop]: Abstraction has 2116 states and 2809 transitions. [2022-01-10 06:45:01,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:01,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 2809 transitions. [2022-01-10 06:45:01,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:45:01,952 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:01,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:45:01,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 06:45:02,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:02,160 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:02,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:02,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1601420259, now seen corresponding path program 1 times [2022-01-10 06:45:02,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:02,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535034246] [2022-01-10 06:45:02,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:02,161 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:02,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:02,162 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:02,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 06:45:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:02,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:45:02,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:02,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:45:02,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:02,457 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:02,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535034246] [2022-01-10 06:45:02,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535034246] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:02,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:02,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:45:02,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409234944] [2022-01-10 06:45:02,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:02,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:45:02,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:02,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:45:02,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:02,458 INFO L87 Difference]: Start difference. First operand 2116 states and 2809 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:02,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:02,913 INFO L93 Difference]: Finished difference Result 4391 states and 5866 transitions. [2022-01-10 06:45:02,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:45:02,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:45:02,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:02,919 INFO L225 Difference]: With dead ends: 4391 [2022-01-10 06:45:02,919 INFO L226 Difference]: Without dead ends: 2294 [2022-01-10 06:45:02,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:45:02,923 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 737 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:02,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 975 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:45:02,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2022-01-10 06:45:03,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 2294. [2022-01-10 06:45:03,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2294 states, 2183 states have (on average 1.3247824095281722) internal successors, (2892), 2185 states have internal predecessors, (2892), 61 states have call successors, (61), 48 states have call predecessors, (61), 49 states have return successors, (62), 61 states have call predecessors, (62), 61 states have call successors, (62) [2022-01-10 06:45:03,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2294 states to 2294 states and 3015 transitions. [2022-01-10 06:45:03,035 INFO L78 Accepts]: Start accepts. Automaton has 2294 states and 3015 transitions. Word has length 175 [2022-01-10 06:45:03,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:03,035 INFO L470 AbstractCegarLoop]: Abstraction has 2294 states and 3015 transitions. [2022-01-10 06:45:03,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:03,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2294 states and 3015 transitions. [2022-01-10 06:45:03,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:45:03,036 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:03,036 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:45:03,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 06:45:03,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:03,248 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:03,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:03,248 INFO L85 PathProgramCache]: Analyzing trace with hash -963194147, now seen corresponding path program 1 times [2022-01-10 06:45:03,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:03,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884175923] [2022-01-10 06:45:03,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:03,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:03,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:03,249 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:03,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 06:45:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:03,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:45:03,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:03,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:45:03,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:03,537 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:03,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884175923] [2022-01-10 06:45:03,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884175923] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:03,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:03,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:45:03,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996339031] [2022-01-10 06:45:03,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:03,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:45:03,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:03,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:45:03,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:03,539 INFO L87 Difference]: Start difference. First operand 2294 states and 3015 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:03,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:03,711 INFO L93 Difference]: Finished difference Result 6178 states and 8164 transitions. [2022-01-10 06:45:03,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:45:03,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:45:03,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:03,724 INFO L225 Difference]: With dead ends: 6178 [2022-01-10 06:45:03,724 INFO L226 Difference]: Without dead ends: 3904 [2022-01-10 06:45:03,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:45:03,728 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 450 mSDsluCounter, 1677 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:03,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 2163 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:03,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3904 states. [2022-01-10 06:45:03,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3904 to 2324. [2022-01-10 06:45:03,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2324 states, 2213 states have (on average 1.315860822413014) internal successors, (2912), 2215 states have internal predecessors, (2912), 61 states have call successors, (61), 48 states have call predecessors, (61), 49 states have return successors, (62), 61 states have call predecessors, (62), 61 states have call successors, (62) [2022-01-10 06:45:03,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2324 states to 2324 states and 3035 transitions. [2022-01-10 06:45:03,848 INFO L78 Accepts]: Start accepts. Automaton has 2324 states and 3035 transitions. Word has length 175 [2022-01-10 06:45:03,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:03,848 INFO L470 AbstractCegarLoop]: Abstraction has 2324 states and 3035 transitions. [2022-01-10 06:45:03,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:03,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2324 states and 3035 transitions. [2022-01-10 06:45:03,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:45:03,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:03,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:45:03,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 06:45:04,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:04,057 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:04,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:04,057 INFO L85 PathProgramCache]: Analyzing trace with hash -101360545, now seen corresponding path program 1 times [2022-01-10 06:45:04,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:04,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [585547633] [2022-01-10 06:45:04,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:04,058 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:04,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:04,059 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:04,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 06:45:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:04,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:45:04,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:04,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:45:04,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:04,375 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:04,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [585547633] [2022-01-10 06:45:04,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [585547633] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:04,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:04,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:45:04,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494396308] [2022-01-10 06:45:04,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:04,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:45:04,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:04,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:45:04,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:04,376 INFO L87 Difference]: Start difference. First operand 2324 states and 3035 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:04,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:04,527 INFO L93 Difference]: Finished difference Result 4922 states and 6466 transitions. [2022-01-10 06:45:04,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:45:04,528 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:45:04,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:04,534 INFO L225 Difference]: With dead ends: 4922 [2022-01-10 06:45:04,534 INFO L226 Difference]: Without dead ends: 2618 [2022-01-10 06:45:04,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:45:04,539 INFO L933 BasicCegarLoop]: 484 mSDtfsCounter, 402 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:04,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 2095 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:04,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2022-01-10 06:45:04,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2330. [2022-01-10 06:45:04,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2330 states, 2219 states have (on average 1.3068949977467328) internal successors, (2900), 2221 states have internal predecessors, (2900), 61 states have call successors, (61), 48 states have call predecessors, (61), 49 states have return successors, (62), 61 states have call predecessors, (62), 61 states have call successors, (62) [2022-01-10 06:45:04,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 3023 transitions. [2022-01-10 06:45:04,674 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 3023 transitions. Word has length 175 [2022-01-10 06:45:04,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:04,674 INFO L470 AbstractCegarLoop]: Abstraction has 2330 states and 3023 transitions. [2022-01-10 06:45:04,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:04,675 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 3023 transitions. [2022-01-10 06:45:04,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:45:04,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:04,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:45:04,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 06:45:04,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:04,884 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:04,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:04,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1823363231, now seen corresponding path program 1 times [2022-01-10 06:45:04,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:04,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363199855] [2022-01-10 06:45:04,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:04,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:04,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:04,886 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:04,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 06:45:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:04,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:45:04,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:45:05,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:05,158 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:05,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363199855] [2022-01-10 06:45:05,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363199855] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:05,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:05,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:45:05,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607059610] [2022-01-10 06:45:05,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:05,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:45:05,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:05,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:45:05,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:05,159 INFO L87 Difference]: Start difference. First operand 2330 states and 3023 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:05,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:05,336 INFO L93 Difference]: Finished difference Result 4906 states and 6406 transitions. [2022-01-10 06:45:05,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:45:05,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:45:05,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:05,342 INFO L225 Difference]: With dead ends: 4906 [2022-01-10 06:45:05,342 INFO L226 Difference]: Without dead ends: 2596 [2022-01-10 06:45:05,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:45:05,346 INFO L933 BasicCegarLoop]: 484 mSDtfsCounter, 363 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:05,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 2080 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:05,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2596 states. [2022-01-10 06:45:05,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2596 to 2336. [2022-01-10 06:45:05,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2336 states, 2225 states have (on average 1.2979775280898875) internal successors, (2888), 2227 states have internal predecessors, (2888), 61 states have call successors, (61), 48 states have call predecessors, (61), 49 states have return successors, (62), 61 states have call predecessors, (62), 61 states have call successors, (62) [2022-01-10 06:45:05,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3011 transitions. [2022-01-10 06:45:05,478 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3011 transitions. Word has length 175 [2022-01-10 06:45:05,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:05,478 INFO L470 AbstractCegarLoop]: Abstraction has 2336 states and 3011 transitions. [2022-01-10 06:45:05,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:05,478 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3011 transitions. [2022-01-10 06:45:05,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:45:05,479 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:05,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:45:05,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 06:45:05,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:05,687 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:05,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:05,687 INFO L85 PathProgramCache]: Analyzing trace with hash 824241123, now seen corresponding path program 1 times [2022-01-10 06:45:05,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:05,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760236180] [2022-01-10 06:45:05,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:05,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:05,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:05,688 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:05,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 06:45:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:05,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:45:05,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:05,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:45:05,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:05,980 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:05,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760236180] [2022-01-10 06:45:05,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760236180] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:05,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:05,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:45:05,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243671212] [2022-01-10 06:45:05,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:05,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:45:05,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:05,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:45:05,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:45:05,981 INFO L87 Difference]: Start difference. First operand 2336 states and 3011 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:06,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:06,226 INFO L93 Difference]: Finished difference Result 6758 states and 8726 transitions. [2022-01-10 06:45:06,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:45:06,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:45:06,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:06,237 INFO L225 Difference]: With dead ends: 6758 [2022-01-10 06:45:06,237 INFO L226 Difference]: Without dead ends: 4442 [2022-01-10 06:45:06,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:45:06,243 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 408 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:06,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 1001 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:06,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4442 states. [2022-01-10 06:45:06,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4442 to 4435. [2022-01-10 06:45:06,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4435 states, 4226 states have (on average 1.2898722195929957) internal successors, (5451), 4229 states have internal predecessors, (5451), 114 states have call successors, (114), 92 states have call predecessors, (114), 94 states have return successors, (116), 114 states have call predecessors, (116), 114 states have call successors, (116) [2022-01-10 06:45:06,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4435 states to 4435 states and 5681 transitions. [2022-01-10 06:45:06,531 INFO L78 Accepts]: Start accepts. Automaton has 4435 states and 5681 transitions. Word has length 175 [2022-01-10 06:45:06,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:06,531 INFO L470 AbstractCegarLoop]: Abstraction has 4435 states and 5681 transitions. [2022-01-10 06:45:06,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:06,531 INFO L276 IsEmpty]: Start isEmpty. Operand 4435 states and 5681 transitions. [2022-01-10 06:45:06,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:45:06,533 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:06,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:45:06,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 06:45:06,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:06,741 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:06,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:06,742 INFO L85 PathProgramCache]: Analyzing trace with hash -140366428, now seen corresponding path program 1 times [2022-01-10 06:45:06,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:06,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424749867] [2022-01-10 06:45:06,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:06,742 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:06,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:06,743 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:06,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 06:45:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:06,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:45:06,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:07,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:45:07,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:07,040 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:07,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424749867] [2022-01-10 06:45:07,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424749867] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:07,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:07,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:45:07,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399864693] [2022-01-10 06:45:07,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:07,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:45:07,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:07,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:45:07,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:07,041 INFO L87 Difference]: Start difference. First operand 4435 states and 5681 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:07,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:07,450 INFO L93 Difference]: Finished difference Result 11230 states and 14529 transitions. [2022-01-10 06:45:07,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:45:07,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:45:07,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:07,463 INFO L225 Difference]: With dead ends: 11230 [2022-01-10 06:45:07,464 INFO L226 Difference]: Without dead ends: 6815 [2022-01-10 06:45:07,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:45:07,472 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 329 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:07,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 2113 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:07,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6815 states. [2022-01-10 06:45:07,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6815 to 4495. [2022-01-10 06:45:07,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4495 states, 4286 states have (on average 1.2816145590293981) internal successors, (5493), 4289 states have internal predecessors, (5493), 114 states have call successors, (114), 92 states have call predecessors, (114), 94 states have return successors, (116), 114 states have call predecessors, (116), 114 states have call successors, (116) [2022-01-10 06:45:07,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4495 states to 4495 states and 5723 transitions. [2022-01-10 06:45:07,761 INFO L78 Accepts]: Start accepts. Automaton has 4495 states and 5723 transitions. Word has length 175 [2022-01-10 06:45:07,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:07,761 INFO L470 AbstractCegarLoop]: Abstraction has 4495 states and 5723 transitions. [2022-01-10 06:45:07,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:07,761 INFO L276 IsEmpty]: Start isEmpty. Operand 4495 states and 5723 transitions. [2022-01-10 06:45:07,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:45:07,762 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:07,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:45:07,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-01-10 06:45:07,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:07,970 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:07,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:07,970 INFO L85 PathProgramCache]: Analyzing trace with hash -21924954, now seen corresponding path program 1 times [2022-01-10 06:45:07,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:07,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117525129] [2022-01-10 06:45:07,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:07,971 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:07,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:07,972 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:07,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 06:45:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:08,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:45:08,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:08,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:45:08,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:08,277 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:08,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117525129] [2022-01-10 06:45:08,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117525129] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:08,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:08,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:45:08,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114153617] [2022-01-10 06:45:08,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:08,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:45:08,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:08,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:45:08,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:08,278 INFO L87 Difference]: Start difference. First operand 4495 states and 5723 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:08,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:08,630 INFO L93 Difference]: Finished difference Result 9334 states and 11971 transitions. [2022-01-10 06:45:08,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:45:08,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:45:08,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:08,644 INFO L225 Difference]: With dead ends: 9334 [2022-01-10 06:45:08,644 INFO L226 Difference]: Without dead ends: 4859 [2022-01-10 06:45:08,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:45:08,652 INFO L933 BasicCegarLoop]: 484 mSDtfsCounter, 245 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:08,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 2030 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:08,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4859 states. [2022-01-10 06:45:08,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4859 to 4507. [2022-01-10 06:45:08,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4507 states, 4298 states have (on average 1.2729176361098185) internal successors, (5471), 4301 states have internal predecessors, (5471), 114 states have call successors, (114), 92 states have call predecessors, (114), 94 states have return successors, (116), 114 states have call predecessors, (116), 114 states have call successors, (116) [2022-01-10 06:45:08,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4507 states to 4507 states and 5701 transitions. [2022-01-10 06:45:08,961 INFO L78 Accepts]: Start accepts. Automaton has 4507 states and 5701 transitions. Word has length 175 [2022-01-10 06:45:08,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:08,961 INFO L470 AbstractCegarLoop]: Abstraction has 4507 states and 5701 transitions. [2022-01-10 06:45:08,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:08,961 INFO L276 IsEmpty]: Start isEmpty. Operand 4507 states and 5701 transitions. [2022-01-10 06:45:08,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:45:08,962 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:08,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:45:08,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 06:45:09,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:09,171 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:09,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:09,172 INFO L85 PathProgramCache]: Analyzing trace with hash -905433944, now seen corresponding path program 1 times [2022-01-10 06:45:09,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:09,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517397902] [2022-01-10 06:45:09,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:09,172 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:09,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:09,173 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:09,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 06:45:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:09,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:45:09,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:45:09,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:09,422 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:09,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517397902] [2022-01-10 06:45:09,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517397902] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:09,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:09,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:45:09,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237242080] [2022-01-10 06:45:09,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:09,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:45:09,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:09,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:45:09,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:09,424 INFO L87 Difference]: Start difference. First operand 4507 states and 5701 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:09,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:09,755 INFO L93 Difference]: Finished difference Result 9302 states and 11855 transitions. [2022-01-10 06:45:09,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:45:09,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:45:09,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:09,766 INFO L225 Difference]: With dead ends: 9302 [2022-01-10 06:45:09,766 INFO L226 Difference]: Without dead ends: 4815 [2022-01-10 06:45:09,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:45:09,775 INFO L933 BasicCegarLoop]: 484 mSDtfsCounter, 206 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:09,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 2015 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:09,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4815 states. [2022-01-10 06:45:10,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4815 to 4519. [2022-01-10 06:45:10,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4519 states, 4310 states have (on average 1.2642691415313225) internal successors, (5449), 4313 states have internal predecessors, (5449), 114 states have call successors, (114), 92 states have call predecessors, (114), 94 states have return successors, (116), 114 states have call predecessors, (116), 114 states have call successors, (116) [2022-01-10 06:45:10,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4519 states to 4519 states and 5679 transitions. [2022-01-10 06:45:10,162 INFO L78 Accepts]: Start accepts. Automaton has 4519 states and 5679 transitions. Word has length 175 [2022-01-10 06:45:10,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:10,162 INFO L470 AbstractCegarLoop]: Abstraction has 4519 states and 5679 transitions. [2022-01-10 06:45:10,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:10,163 INFO L276 IsEmpty]: Start isEmpty. Operand 4519 states and 5679 transitions. [2022-01-10 06:45:10,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:45:10,163 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:10,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:45:10,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-01-10 06:45:10,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:10,371 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:10,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:10,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1491710166, now seen corresponding path program 1 times [2022-01-10 06:45:10,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:10,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099761019] [2022-01-10 06:45:10,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:10,372 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:10,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:10,373 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:10,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 06:45:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:10,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:45:10,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:10,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:45:10,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:10,664 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:10,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099761019] [2022-01-10 06:45:10,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099761019] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:10,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:10,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:45:10,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552872837] [2022-01-10 06:45:10,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:10,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:45:10,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:10,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:45:10,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:10,665 INFO L87 Difference]: Start difference. First operand 4519 states and 5679 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:10,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:11,000 INFO L93 Difference]: Finished difference Result 9270 states and 11739 transitions. [2022-01-10 06:45:11,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:45:11,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:45:11,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:11,013 INFO L225 Difference]: With dead ends: 9270 [2022-01-10 06:45:11,013 INFO L226 Difference]: Without dead ends: 4771 [2022-01-10 06:45:11,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:45:11,021 INFO L933 BasicCegarLoop]: 484 mSDtfsCounter, 167 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:11,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 2000 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:11,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4771 states. [2022-01-10 06:45:11,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4771 to 4531. [2022-01-10 06:45:11,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4531 states, 4322 states have (on average 1.2556686719111523) internal successors, (5427), 4325 states have internal predecessors, (5427), 114 states have call successors, (114), 92 states have call predecessors, (114), 94 states have return successors, (116), 114 states have call predecessors, (116), 114 states have call successors, (116) [2022-01-10 06:45:11,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4531 states to 4531 states and 5657 transitions. [2022-01-10 06:45:11,414 INFO L78 Accepts]: Start accepts. Automaton has 4531 states and 5657 transitions. Word has length 175 [2022-01-10 06:45:11,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:11,414 INFO L470 AbstractCegarLoop]: Abstraction has 4531 states and 5657 transitions. [2022-01-10 06:45:11,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:11,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4531 states and 5657 transitions. [2022-01-10 06:45:11,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:45:11,415 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:11,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:45:11,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-01-10 06:45:11,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:11,625 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:11,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:11,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1745419052, now seen corresponding path program 1 times [2022-01-10 06:45:11,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:11,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99560286] [2022-01-10 06:45:11,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:11,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:11,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:11,627 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:11,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 06:45:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:11,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:45:11,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:11,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:45:11,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:11,909 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:11,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99560286] [2022-01-10 06:45:11,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99560286] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:11,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:11,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:45:11,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720097861] [2022-01-10 06:45:11,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:11,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:45:11,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:11,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:45:11,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:11,910 INFO L87 Difference]: Start difference. First operand 4531 states and 5657 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:12,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:12,261 INFO L93 Difference]: Finished difference Result 9238 states and 11623 transitions. [2022-01-10 06:45:12,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:45:12,261 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:45:12,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:12,295 INFO L225 Difference]: With dead ends: 9238 [2022-01-10 06:45:12,295 INFO L226 Difference]: Without dead ends: 4727 [2022-01-10 06:45:12,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:45:12,299 INFO L933 BasicCegarLoop]: 484 mSDtfsCounter, 128 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:12,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 1985 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:12,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4727 states. [2022-01-10 06:45:12,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4727 to 4543. [2022-01-10 06:45:12,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4543 states, 4334 states have (on average 1.2471158283341024) internal successors, (5405), 4337 states have internal predecessors, (5405), 114 states have call successors, (114), 92 states have call predecessors, (114), 94 states have return successors, (116), 114 states have call predecessors, (116), 114 states have call successors, (116) [2022-01-10 06:45:12,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4543 states to 4543 states and 5635 transitions. [2022-01-10 06:45:12,596 INFO L78 Accepts]: Start accepts. Automaton has 4543 states and 5635 transitions. Word has length 175 [2022-01-10 06:45:12,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:12,596 INFO L470 AbstractCegarLoop]: Abstraction has 4543 states and 5635 transitions. [2022-01-10 06:45:12,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:12,597 INFO L276 IsEmpty]: Start isEmpty. Operand 4543 states and 5635 transitions. [2022-01-10 06:45:12,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:45:12,597 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:12,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:45:12,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-01-10 06:45:12,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:12,805 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:12,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:12,806 INFO L85 PathProgramCache]: Analyzing trace with hash -815443794, now seen corresponding path program 1 times [2022-01-10 06:45:12,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:12,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120134943] [2022-01-10 06:45:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:12,806 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:12,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:12,807 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:12,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 06:45:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:12,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:45:12,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:13,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:45:13,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:13,100 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:13,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120134943] [2022-01-10 06:45:13,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120134943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:13,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:13,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:45:13,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249026865] [2022-01-10 06:45:13,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:13,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:45:13,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:13,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:45:13,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:13,102 INFO L87 Difference]: Start difference. First operand 4543 states and 5635 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:13,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:13,432 INFO L93 Difference]: Finished difference Result 9206 states and 11507 transitions. [2022-01-10 06:45:13,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:45:13,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:45:13,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:13,440 INFO L225 Difference]: With dead ends: 9206 [2022-01-10 06:45:13,440 INFO L226 Difference]: Without dead ends: 4683 [2022-01-10 06:45:13,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:45:13,444 INFO L933 BasicCegarLoop]: 484 mSDtfsCounter, 89 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:13,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 1970 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:13,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4683 states. [2022-01-10 06:45:13,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4683 to 4555. [2022-01-10 06:45:13,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4555 states, 4346 states have (on average 1.2386102162908421) internal successors, (5383), 4349 states have internal predecessors, (5383), 114 states have call successors, (114), 92 states have call predecessors, (114), 94 states have return successors, (116), 114 states have call predecessors, (116), 114 states have call successors, (116) [2022-01-10 06:45:13,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4555 states to 4555 states and 5613 transitions. [2022-01-10 06:45:13,746 INFO L78 Accepts]: Start accepts. Automaton has 4555 states and 5613 transitions. Word has length 175 [2022-01-10 06:45:13,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:13,746 INFO L470 AbstractCegarLoop]: Abstraction has 4555 states and 5613 transitions. [2022-01-10 06:45:13,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:13,747 INFO L276 IsEmpty]: Start isEmpty. Operand 4555 states and 5613 transitions. [2022-01-10 06:45:13,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:45:13,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:13,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:45:13,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-01-10 06:45:13,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:13,951 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:13,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:13,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1308069968, now seen corresponding path program 1 times [2022-01-10 06:45:13,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:13,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115003488] [2022-01-10 06:45:13,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:13,952 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:13,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:13,953 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:13,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-01-10 06:45:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:14,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:45:14,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:14,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:45:14,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:14,226 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:14,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115003488] [2022-01-10 06:45:14,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115003488] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:14,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:14,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:45:14,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417947463] [2022-01-10 06:45:14,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:14,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:45:14,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:14,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:45:14,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:14,227 INFO L87 Difference]: Start difference. First operand 4555 states and 5613 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:14,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:14,559 INFO L93 Difference]: Finished difference Result 9174 states and 11391 transitions. [2022-01-10 06:45:14,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:45:14,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-01-10 06:45:14,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:14,568 INFO L225 Difference]: With dead ends: 9174 [2022-01-10 06:45:14,568 INFO L226 Difference]: Without dead ends: 4639 [2022-01-10 06:45:14,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:45:14,574 INFO L933 BasicCegarLoop]: 484 mSDtfsCounter, 50 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1955 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:14,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 1955 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:14,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4639 states. [2022-01-10 06:45:14,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4639 to 4567. [2022-01-10 06:45:14,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4567 states, 4358 states have (on average 1.2301514456172555) internal successors, (5361), 4361 states have internal predecessors, (5361), 114 states have call successors, (114), 92 states have call predecessors, (114), 94 states have return successors, (116), 114 states have call predecessors, (116), 114 states have call successors, (116) [2022-01-10 06:45:14,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4567 states to 4567 states and 5591 transitions. [2022-01-10 06:45:14,910 INFO L78 Accepts]: Start accepts. Automaton has 4567 states and 5591 transitions. Word has length 175 [2022-01-10 06:45:14,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:14,910 INFO L470 AbstractCegarLoop]: Abstraction has 4567 states and 5591 transitions. [2022-01-10 06:45:14,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:14,910 INFO L276 IsEmpty]: Start isEmpty. Operand 4567 states and 5591 transitions. [2022-01-10 06:45:14,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:45:14,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:14,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:45:14,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-01-10 06:45:15,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:15,112 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:15,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:15,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1725466574, now seen corresponding path program 1 times [2022-01-10 06:45:15,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:15,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002631589] [2022-01-10 06:45:15,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:15,113 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:15,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:15,114 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:15,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-01-10 06:45:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:15,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:45:15,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:15,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:45:15,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:15,511 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:15,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002631589] [2022-01-10 06:45:15,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002631589] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:15,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:15,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:45:15,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984848294] [2022-01-10 06:45:15,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:15,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:45:15,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:15,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:45:15,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:45:15,513 INFO L87 Difference]: Start difference. First operand 4567 states and 5591 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 06:45:16,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:16,151 INFO L93 Difference]: Finished difference Result 13611 states and 16700 transitions. [2022-01-10 06:45:16,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:45:16,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 175 [2022-01-10 06:45:16,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:16,169 INFO L225 Difference]: With dead ends: 13611 [2022-01-10 06:45:16,170 INFO L226 Difference]: Without dead ends: 9064 [2022-01-10 06:45:16,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:45:16,179 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 308 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:16,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 1000 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:16,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9064 states. [2022-01-10 06:45:16,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9064 to 9056. [2022-01-10 06:45:16,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9056 states, 8643 states have (on average 1.2211037834085388) internal successors, (10554), 8648 states have internal predecessors, (10554), 224 states have call successors, (224), 184 states have call predecessors, (224), 188 states have return successors, (228), 224 states have call predecessors, (228), 224 states have call successors, (228) [2022-01-10 06:45:16,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9056 states to 9056 states and 11006 transitions. [2022-01-10 06:45:16,821 INFO L78 Accepts]: Start accepts. Automaton has 9056 states and 11006 transitions. Word has length 175 [2022-01-10 06:45:16,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:16,821 INFO L470 AbstractCegarLoop]: Abstraction has 9056 states and 11006 transitions. [2022-01-10 06:45:16,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 06:45:16,821 INFO L276 IsEmpty]: Start isEmpty. Operand 9056 states and 11006 transitions. [2022-01-10 06:45:16,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-01-10 06:45:16,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:16,824 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:45:16,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-01-10 06:45:17,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:17,024 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:17,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:17,025 INFO L85 PathProgramCache]: Analyzing trace with hash -241978045, now seen corresponding path program 1 times [2022-01-10 06:45:17,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:17,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986190708] [2022-01-10 06:45:17,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:17,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:17,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:17,026 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:17,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-01-10 06:45:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:17,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:45:17,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:17,321 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-10 06:45:17,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:17,322 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:17,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986190708] [2022-01-10 06:45:17,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986190708] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:17,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:17,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:45:17,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986964708] [2022-01-10 06:45:17,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:17,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:45:17,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:17,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:45:17,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:17,323 INFO L87 Difference]: Start difference. First operand 9056 states and 11006 transitions. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:17,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:17,979 INFO L93 Difference]: Finished difference Result 18358 states and 22467 transitions. [2022-01-10 06:45:17,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:45:17,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 201 [2022-01-10 06:45:17,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:17,997 INFO L225 Difference]: With dead ends: 18358 [2022-01-10 06:45:17,998 INFO L226 Difference]: Without dead ends: 9322 [2022-01-10 06:45:18,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:45:18,012 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 10 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:18,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1951 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:18,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9322 states. [2022-01-10 06:45:18,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9322 to 9170. [2022-01-10 06:45:18,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9170 states, 8757 states have (on average 1.213886034029919) internal successors, (10630), 8762 states have internal predecessors, (10630), 224 states have call successors, (224), 184 states have call predecessors, (224), 188 states have return successors, (228), 224 states have call predecessors, (228), 224 states have call successors, (228) [2022-01-10 06:45:18,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9170 states to 9170 states and 11082 transitions. [2022-01-10 06:45:18,678 INFO L78 Accepts]: Start accepts. Automaton has 9170 states and 11082 transitions. Word has length 201 [2022-01-10 06:45:18,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:18,678 INFO L470 AbstractCegarLoop]: Abstraction has 9170 states and 11082 transitions. [2022-01-10 06:45:18,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:18,678 INFO L276 IsEmpty]: Start isEmpty. Operand 9170 states and 11082 transitions. [2022-01-10 06:45:18,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-01-10 06:45:18,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:18,681 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:45:18,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-01-10 06:45:18,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:18,889 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:18,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:18,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1082878149, now seen corresponding path program 1 times [2022-01-10 06:45:18,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:18,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227690695] [2022-01-10 06:45:18,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:18,890 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:18,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:18,891 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:18,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-01-10 06:45:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:18,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:45:18,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:19,246 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-10 06:45:19,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:19,247 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:19,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227690695] [2022-01-10 06:45:19,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227690695] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:19,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:19,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:45:19,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519368786] [2022-01-10 06:45:19,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:19,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:45:19,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:19,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:45:19,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:19,248 INFO L87 Difference]: Start difference. First operand 9170 states and 11082 transitions. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:20,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:20,250 INFO L93 Difference]: Finished difference Result 18321 states and 22154 transitions. [2022-01-10 06:45:20,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:45:20,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 201 [2022-01-10 06:45:20,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:20,269 INFO L225 Difference]: With dead ends: 18321 [2022-01-10 06:45:20,270 INFO L226 Difference]: Without dead ends: 9170 [2022-01-10 06:45:20,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:45:20,283 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 540 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:20,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [557 Valid, 970 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:45:20,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9170 states. [2022-01-10 06:45:20,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9170 to 9170. [2022-01-10 06:45:20,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9170 states, 8757 states have (on average 1.210688591983556) internal successors, (10602), 8762 states have internal predecessors, (10602), 224 states have call successors, (224), 184 states have call predecessors, (224), 188 states have return successors, (228), 224 states have call predecessors, (228), 224 states have call successors, (228) [2022-01-10 06:45:20,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9170 states to 9170 states and 11054 transitions. [2022-01-10 06:45:20,973 INFO L78 Accepts]: Start accepts. Automaton has 9170 states and 11054 transitions. Word has length 201 [2022-01-10 06:45:20,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:20,973 INFO L470 AbstractCegarLoop]: Abstraction has 9170 states and 11054 transitions. [2022-01-10 06:45:20,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:20,974 INFO L276 IsEmpty]: Start isEmpty. Operand 9170 states and 11054 transitions. [2022-01-10 06:45:20,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-01-10 06:45:20,976 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:20,976 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:45:20,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-01-10 06:45:21,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:21,180 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:21,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:21,181 INFO L85 PathProgramCache]: Analyzing trace with hash -828164409, now seen corresponding path program 1 times [2022-01-10 06:45:21,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:21,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354461049] [2022-01-10 06:45:21,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:21,181 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:21,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:21,184 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:21,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-01-10 06:45:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:21,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:45:21,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:21,544 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-10 06:45:21,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:21,544 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:21,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354461049] [2022-01-10 06:45:21,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354461049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:21,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:21,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:45:21,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536883388] [2022-01-10 06:45:21,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:21,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:45:21,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:21,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:45:21,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:21,545 INFO L87 Difference]: Start difference. First operand 9170 states and 11054 transitions. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:22,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:22,726 INFO L93 Difference]: Finished difference Result 19185 states and 23158 transitions. [2022-01-10 06:45:22,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:45:22,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 201 [2022-01-10 06:45:22,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:22,746 INFO L225 Difference]: With dead ends: 19185 [2022-01-10 06:45:22,746 INFO L226 Difference]: Without dead ends: 10034 [2022-01-10 06:45:22,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:45:22,759 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 698 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:22,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [715 Valid, 1034 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 06:45:22,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10034 states. [2022-01-10 06:45:23,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10034 to 9790. [2022-01-10 06:45:23,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9790 states, 9353 states have (on average 1.198545921094836) internal successors, (11210), 9358 states have internal predecessors, (11210), 232 states have call successors, (232), 200 states have call predecessors, (232), 204 states have return successors, (236), 232 states have call predecessors, (236), 232 states have call successors, (236) [2022-01-10 06:45:23,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9790 states to 9790 states and 11678 transitions. [2022-01-10 06:45:23,505 INFO L78 Accepts]: Start accepts. Automaton has 9790 states and 11678 transitions. Word has length 201 [2022-01-10 06:45:23,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:23,505 INFO L470 AbstractCegarLoop]: Abstraction has 9790 states and 11678 transitions. [2022-01-10 06:45:23,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:23,506 INFO L276 IsEmpty]: Start isEmpty. Operand 9790 states and 11678 transitions. [2022-01-10 06:45:23,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-01-10 06:45:23,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:23,508 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:45:23,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-01-10 06:45:23,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:23,716 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:23,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:23,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1780623049, now seen corresponding path program 1 times [2022-01-10 06:45:23,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:23,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257396305] [2022-01-10 06:45:23,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:23,717 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:23,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:23,718 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:23,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-01-10 06:45:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:23,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:45:23,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:24,078 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-10 06:45:24,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:24,079 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:24,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257396305] [2022-01-10 06:45:24,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257396305] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:24,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:24,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:45:24,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176083260] [2022-01-10 06:45:24,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:24,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:45:24,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:24,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:45:24,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:24,080 INFO L87 Difference]: Start difference. First operand 9790 states and 11678 transitions. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:25,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:25,292 INFO L93 Difference]: Finished difference Result 20155 states and 24084 transitions. [2022-01-10 06:45:25,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:45:25,293 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 201 [2022-01-10 06:45:25,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:25,311 INFO L225 Difference]: With dead ends: 20155 [2022-01-10 06:45:25,311 INFO L226 Difference]: Without dead ends: 10384 [2022-01-10 06:45:25,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:45:25,324 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 616 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:25,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 960 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:45:25,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10384 states. [2022-01-10 06:45:26,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10384 to 10368. [2022-01-10 06:45:26,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10368 states, 9923 states have (on average 1.1871409855890356) internal successors, (11780), 9928 states have internal predecessors, (11780), 232 states have call successors, (232), 208 states have call predecessors, (232), 212 states have return successors, (236), 232 states have call predecessors, (236), 232 states have call successors, (236) [2022-01-10 06:45:26,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10368 states to 10368 states and 12248 transitions. [2022-01-10 06:45:26,127 INFO L78 Accepts]: Start accepts. Automaton has 10368 states and 12248 transitions. Word has length 201 [2022-01-10 06:45:26,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:26,127 INFO L470 AbstractCegarLoop]: Abstraction has 10368 states and 12248 transitions. [2022-01-10 06:45:26,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:26,127 INFO L276 IsEmpty]: Start isEmpty. Operand 10368 states and 12248 transitions. [2022-01-10 06:45:26,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-01-10 06:45:26,130 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:26,130 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:45:26,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-01-10 06:45:26,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:26,330 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:26,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:26,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1253426997, now seen corresponding path program 1 times [2022-01-10 06:45:26,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:26,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470745842] [2022-01-10 06:45:26,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:26,331 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:26,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:26,332 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:26,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-01-10 06:45:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:26,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:45:26,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:26,705 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 06:45:26,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:26,705 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:26,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470745842] [2022-01-10 06:45:26,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470745842] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:26,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:26,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:45:26,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58568752] [2022-01-10 06:45:26,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:26,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:45:26,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:26,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:45:26,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:45:26,706 INFO L87 Difference]: Start difference. First operand 10368 states and 12248 transitions. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 3 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-01-10 06:45:28,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:28,772 INFO L93 Difference]: Finished difference Result 33962 states and 39986 transitions. [2022-01-10 06:45:28,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:45:28,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 3 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 201 [2022-01-10 06:45:28,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:28,818 INFO L225 Difference]: With dead ends: 33962 [2022-01-10 06:45:28,818 INFO L226 Difference]: Without dead ends: 23615 [2022-01-10 06:45:28,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:28,831 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 691 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:28,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 1199 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:45:28,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23615 states. [2022-01-10 06:45:30,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23615 to 23268. [2022-01-10 06:45:30,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23268 states, 22332 states have (on average 1.178846498298406) internal successors, (26326), 22384 states have internal predecessors, (26326), 447 states have call successors, (447), 400 states have call predecessors, (447), 488 states have return successors, (563), 485 states have call predecessors, (563), 447 states have call successors, (563) [2022-01-10 06:45:30,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23268 states to 23268 states and 27336 transitions. [2022-01-10 06:45:30,849 INFO L78 Accepts]: Start accepts. Automaton has 23268 states and 27336 transitions. Word has length 201 [2022-01-10 06:45:30,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:30,850 INFO L470 AbstractCegarLoop]: Abstraction has 23268 states and 27336 transitions. [2022-01-10 06:45:30,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 3 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-01-10 06:45:30,850 INFO L276 IsEmpty]: Start isEmpty. Operand 23268 states and 27336 transitions. [2022-01-10 06:45:30,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-01-10 06:45:30,855 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:30,855 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:45:30,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-01-10 06:45:31,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:31,056 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:31,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:31,056 INFO L85 PathProgramCache]: Analyzing trace with hash -109563157, now seen corresponding path program 1 times [2022-01-10 06:45:31,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:31,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879047358] [2022-01-10 06:45:31,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:31,057 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:31,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:31,058 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:31,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-01-10 06:45:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:31,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:45:31,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:31,440 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 06:45:31,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:31,440 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:31,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879047358] [2022-01-10 06:45:31,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1879047358] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:31,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:31,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:45:31,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254751473] [2022-01-10 06:45:31,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:31,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:45:31,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:31,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:45:31,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:45:31,441 INFO L87 Difference]: Start difference. First operand 23268 states and 27336 transitions. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 3 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-01-10 06:45:35,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:35,465 INFO L93 Difference]: Finished difference Result 68308 states and 80188 transitions. [2022-01-10 06:45:35,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:45:35,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 3 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 203 [2022-01-10 06:45:35,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:35,546 INFO L225 Difference]: With dead ends: 68308 [2022-01-10 06:45:35,546 INFO L226 Difference]: Without dead ends: 45076 [2022-01-10 06:45:35,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:35,575 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 630 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:35,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 1520 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:45:35,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45076 states. [2022-01-10 06:45:39,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45076 to 45073. [2022-01-10 06:45:39,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45073 states, 43259 states have (on average 1.1761714325342703) internal successors, (50880), 43367 states have internal predecessors, (50880), 861 states have call successors, (861), 768 states have call predecessors, (861), 952 states have return successors, (1125), 941 states have call predecessors, (1125), 861 states have call successors, (1125) [2022-01-10 06:45:39,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45073 states to 45073 states and 52866 transitions. [2022-01-10 06:45:39,400 INFO L78 Accepts]: Start accepts. Automaton has 45073 states and 52866 transitions. Word has length 203 [2022-01-10 06:45:39,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:39,401 INFO L470 AbstractCegarLoop]: Abstraction has 45073 states and 52866 transitions. [2022-01-10 06:45:39,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 3 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-01-10 06:45:39,401 INFO L276 IsEmpty]: Start isEmpty. Operand 45073 states and 52866 transitions. [2022-01-10 06:45:39,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-01-10 06:45:39,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:39,410 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:45:39,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-01-10 06:45:39,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:39,618 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:39,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:39,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1904282221, now seen corresponding path program 1 times [2022-01-10 06:45:39,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:39,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641237111] [2022-01-10 06:45:39,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:39,619 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:39,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:39,620 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:39,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-01-10 06:45:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:39,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:45:39,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:39,946 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-10 06:45:39,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:39,946 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:39,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641237111] [2022-01-10 06:45:39,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641237111] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:39,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:39,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:45:39,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563752665] [2022-01-10 06:45:39,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:39,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:45:39,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:39,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:45:39,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:45:39,947 INFO L87 Difference]: Start difference. First operand 45073 states and 52866 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:43,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:43,967 INFO L93 Difference]: Finished difference Result 90082 states and 105616 transitions. [2022-01-10 06:45:43,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:45:43,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 203 [2022-01-10 06:45:43,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:44,058 INFO L225 Difference]: With dead ends: 90082 [2022-01-10 06:45:44,058 INFO L226 Difference]: Without dead ends: 45045 [2022-01-10 06:45:44,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:45:44,103 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 469 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:44,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 476 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:44,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45045 states. [2022-01-10 06:45:47,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45045 to 45045. [2022-01-10 06:45:47,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45045 states, 43237 states have (on average 1.1757985059092906) internal successors, (50838), 43343 states have internal predecessors, (50838), 855 states have call successors, (855), 768 states have call predecessors, (855), 952 states have return successors, (1119), 935 states have call predecessors, (1119), 855 states have call successors, (1119) [2022-01-10 06:45:47,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45045 states to 45045 states and 52812 transitions. [2022-01-10 06:45:47,943 INFO L78 Accepts]: Start accepts. Automaton has 45045 states and 52812 transitions. Word has length 203 [2022-01-10 06:45:47,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:47,943 INFO L470 AbstractCegarLoop]: Abstraction has 45045 states and 52812 transitions. [2022-01-10 06:45:47,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:45:47,944 INFO L276 IsEmpty]: Start isEmpty. Operand 45045 states and 52812 transitions. [2022-01-10 06:45:47,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-01-10 06:45:47,951 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:47,951 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:45:47,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-01-10 06:45:48,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:48,152 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:48,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:48,152 INFO L85 PathProgramCache]: Analyzing trace with hash 938173945, now seen corresponding path program 1 times [2022-01-10 06:45:48,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:48,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749265916] [2022-01-10 06:45:48,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:48,153 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:48,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:48,154 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:48,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-01-10 06:45:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:48,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:45:48,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:48,530 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 06:45:48,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:48,530 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:48,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749265916] [2022-01-10 06:45:48,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749265916] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:48,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:48,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:45:48,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135096037] [2022-01-10 06:45:48,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:48,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:45:48,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:48,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:45:48,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:45:48,531 INFO L87 Difference]: Start difference. First operand 45045 states and 52812 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)